Railroad-spike.



G..W. STEVENS. RAILROAD SPIKE. APPLICATION FILED DEOgd, 1905.

906,079. Ptentednec. Vs, 1.908.y

witness@ G. W. STEVENS. RAILROAD SPIKE:

APPLIoATmN FILED 1320.4, 1905.' Y

Pated Dec. s, 1908.

2 SHEETS-SHEET 2.

narran strass entranti eric RAILRQAD-SPIKE.

No. 906,079. Speccaton of Letters Patent. Patented Dec. 8, 1.968.

' appresa@ aree necember 4, 1905. sensi No. 290,197.

` T o all whom it may concern: forni to the contour of the corresponding Be it known that l, CHARLES W. STEVENS, rounded edge of the shank.

a citizen of the United States, residing at The lower end portion? of the spike hasthe Sidney, in the county of Fremont, State of shape of a spear-head somewhat, two of the 5 Iowa, have invented certain new and useful side faces thereof being vertical and parallel 60 vImprovements in Railroad-Spikes; and l do while the'other two side faces 16 and 17 hereby declare the-following to be a full, converge downwardly to a cutting edge. Lt clear, and exact description of the inventhe upper ends of the side faces 16 and 17 tion, such as will enable others skilled in are the shoulders 18 which are respectively i the art to which it appertains to inake and parallel with the upper faces of the ribs 10 65 use the saine. and 10 next above.4 v This invention relates to railroad spikes ,ln practice, the spike is driven into the and has for its object to provide a spike tie with one of the two series o1 ribs facwhich when driven into arailroad tie will ing the rail. After being driven alinost i be securely held therein, thereby preventing the entire distance, the spike is given a 7o displacement or the' rails. quarter of a turn to bring the head into With the above and other objects in view, proper engagement with the rail flange, the lthe invention consists in the construction ribs lo' and 10 serving to tighten the contact and arrangement of parts shown in the ac ofthe head with the said flange. The spike 'conipanying drawings, in which: is, of course. turned in the direction of cur- 75 Figure 1 is a front elevation of the spike. vatuie of the ribs and the lug S and the an- Fig. 2 is a side elevation. Figs.- 3 and e are gular edges of the'said ribs and lug prevent detail horizontal sectional views on the lines accidental return of the spike to its position 3&3 and 4 4 of Fig. l. Fig. 5 is a rear elebefore it was turned.

vation of the spike. What is clainied is:-- f- 80 Referring to the drawings, the nunieral 5 1. A spike having its shank forined with denotes the shank of the spike, 6 the head of diagimally` opposite angular corner edges, thesanie and 7 the toe or point. and oppositely disposed rounded edges, and

Formed on the front face of the shank 5 a lug formed upon the shank,r said lug havof the spke and at its point of junction with ing a rounded edge presented in the direc- 85 the head 6 is a lug 8 which is rounded as at tion of rotation of the spike when driven 9 'at one side, the said rounded portion being into a body and the angular edge presented formed by omitting a portion of the front in an opposite direction.

face of the lug and a portion of one of the Q. A spike comprising a shank, series of side faces of the same. threads forined on opposite faces of said 9G- Forined on each of the side faces of the shank, each of said threads having a liori shank 5 intermediate the head 6 and the toe zontal under face and an inclined top face T is a series of ribs' 10 and 10. Each rib resulting in a cutting edge and a shouldered of the series 10 and 10 has its ends Hush edge.

40 with the front and ;rear faces of the shank 3. A spike comprising a shank formed 9 and each has a horizontal under face 11 and .with oppositely disposed flat sides and i an inclined top face 12, the inclined face of. oppositely disposed rounded sides, each of l each series lying in different planes. The said rounded sides being inerged into one frontface of the shank has an angular edge of the flat sides, and threads formed upon 13 and a rounded edge 14, the rounded edge each of said rounded sides, the said threads. 105 n 14 being located.' on the opposite side of the being each extended entirely across the shank to the rounded edge 9 of the lug 8 rounded side upon 'which it is formed and and the rear face of the shank including an throughout the niergeg'j( face portion of the angular edge 15 and a rounded edge 16, the said merged side. rounded edge 16 bein(r on the...sarnev side of` In testimony whereof, I afiix niy signa- 105 the spike as the roun ed edge 9 ofthe lug ture, in presence of two witnesses. 8, resulting in each of the side faces of the y CHAR-LES 'W. STEVENS. shank including an angular edge and a. lVitnesses: y rounded ed e. The ribs 10 and 10 are as J. Vance SAMUELS stated roun ed at one of their ends to con- W.|A. WEBSTER. 

